872359717 has 2 divisors, whose sum is σ = 872359718. Its totient is φ = 872359716.

The previous prime is 872359681. The next prime is 872359751. The reversal of 872359717 is 717953278.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 542610436 + 329749281 = 23294^2 + 18159^2 .

It is a cyclic number.

It is not a de Polignac number, because 872359717 - 2²³ = 863971109 is a prime.

It is a super-2 number, since 2×872359717² = 1522022951688640178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872359517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436179858 + 436179859.

It is an arithmetic number, because the mean of its divisors is an integer number (436179859).

Almost surely, 2^872359717 is an apocalyptic number.

It is an amenable number.

872359717 is a deficient number, since it is larger than the sum of its proper divisors (1).

872359717 is an equidigital number, since it uses as much as digits as its factorization.

872359717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 740880, while the sum is 49.

The square root of 872359717 is about 29535.7362698139. The cubic root of 872359717 is about 955.5025879004.

The spelling of 872359717 in words is "eight hundred seventy-two million, three hundred fifty-nine thousand, seven hundred seventeen".